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daltonism

[dawl-tn-iz-uh m] /ˈdɔl tnˌɪz əm/
noun, (sometimes initial capital letter) Pathology
1.
color blindness, especially the inability to distinguish red from green.
Origin
1835-1845
1835-45; J. Dalton + -ism
Related forms
daltonic
[dawl-ton-ik] /dɔlˈtɒn ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for daltonism

daltonism

/ˈdɔːltəˌnɪzəm/
noun
1.
colour blindness, esp the confusion of red and green
Derived Forms
daltonic (dɔːlˈtɒnɪk) adjective
Word Origin
C19: from French daltonisme, after John Dalton
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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daltonism in Medicine

daltonism dal·ton·ism (dôl'tə-nĭz'əm)
n.
An inherited defect in the perception of red and green; red-green colorblindness.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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